fixes and improvements

backend/src/media_library_viewer_api/services/settings_store.py

@@ -355,7 +355,7 @@ class SettingsStore:
             )
 
     def list_machines(self) -> list[dict[str, Any]]:
-        self.ensure_defaults()
+        self.init_schema()
         with self.connect() as conn:
             rows = conn.execute(
                 "SELECT * FROM monitoring_machines ORDER BY CASE WHEN id = ? THEN 0 ELSE 1 END, name COLLATE NOCASE",
@@ -366,7 +366,7 @@ class SettingsStore:
     def get_machine(self, machine_id: str | None) -> dict[str, Any] | None:
         if not machine_id:
             return None
-        self.ensure_defaults()
+        self.init_schema()
         with self.connect() as conn:
             row = conn.execute("SELECT * FROM monitoring_machines WHERE id = ?", (machine_id,)).fetchone()
         return self._row_to_machine(row) if row else None
@@ -375,7 +375,7 @@ class SettingsStore:
         """Return the full machine config including secrets."""
         if not machine_id:
             return None
-        self.ensure_defaults()
+        self.init_schema()
         with self.connect() as conn:
             row = conn.execute("SELECT * FROM monitoring_machines WHERE id = ?", (machine_id,)).fetchone()
         if not row: